Abstract: N-Doped fluorescent carbon quantum dots (N-CQDs) were prepared by hydrothermal method with sodium lignosulfonate as carbon source and O-phenylenediamine as nitrogen source. N-CQDs exhibited a spherical micro-morphology and good water-solubility, and could emit blue-violet and cyan-green fluorescence under 254 nm and 365 nm ultraviolet (UV) light, respectively, indicating the dual-channel fluorescence emission properties. A fluorescent emulsion (N-CW_1-4) was further prepared by blending N-CQDs with cationic leather finishing agent at a volume ratio of 1∶4. N-CW_1-4 possessed good stability and dispersion, and its average hydrated particle size was only 42.3 nm. Meanwhile, it could also exhibit the dual-channel fluorescence emission properties. N- CW_{1- 4} as a fluorescent anti- counterfeiting coating was successfully applied in the field of leather anti-counterfeiting. The resulting anti-counterfeiting lattice pattern exhibited excellent fluorescence stability at high temperature (65 ℃), low temperature (-21 ℃), and continuous UV radiation (365 nm). In addition, the fluorescent anti-counterfeiting coating was still stable in the simulated rain and roller washing scenes. N-CW_1-4 could also be extended to the anti-counterfeiting coatings with various colors of leather. This work provides a new method and strategy for leather anti-counterfeiting and has positive significance for the safety and benign development of leather market.